from flask import session, jsonify
from app.utils.logger import logger
from app.api.services.base_service import BaseService
from marshmallow import ValidationError
from app.extensions import db
from app.models import Offer, MembersPending, Members
from app.api.helpers.response_helper import ResponseHelper
from werkzeug.security import generate_password_hash, check_password_hash

from app.api.schemas.register import RegisterSchema
from app.api.schemas.register_verify import RegisterVerifySchema
from app.api.schemas.register_complete import RegisterCompleteSchema

from app.api.services.login import LoginService

from flask_mail import Mail, Message
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart


import datetime
import jwt
import random
from app.config import Config


class RegisterService(BaseService):
    JWT_SECRET_KEY = Config.JWT_SECRET_KEY

    SEND_EMAIL_FROM = Config.SEND_EMAIL_FROM
    SEND_EMAIL_PASS = Config.SEND_EMAIL_PASS
    THIS_SITE_URL = Config.THIS_SITE_URL

    @staticmethod
    def encrypt_password(self, password):
        """Encrypt password"""
        return generate_password_hash(password)

    @staticmethod
    def process_complete(data):
        try:
            with db.session.begin():

                validated_data = RegisterService.validate_data(data, RegisterCompleteSchema())
                # Simulate processing
                verify_link = validated_data.get('verify_link')
                username = validated_data.get('username')
                password = validated_data.get('password')
                country = validated_data.get('country')

                data ={}
                if not verify_link:
                    return jsonify({'message': 'Error - missing verify link'}), 403
                try:
                    data = jwt.decode(verify_link, RegisterService.JWT_SECRET_KEY, algorithms=["HS256"])
                except:
                    return jsonify({'status': 'INVALID', 'message': 'Link is invalid'}), 403

                previousAcc = Members.get_member_by_username(username)
                if  previousAcc:
                    response_data = {
                        "error_message": "try another username ",
                        "error_message_key": "use_another_username",
                    }
                    return ResponseHelper.error(data=response_data)
                user= data["user"]
                firstname = user['first_name']
                lastname = user['last_name']
                email = user['email']

                encrypted_pass = generate_password_hash(password)
                newAccount  = Members.add_member(firstname, lastname, email, username,encrypted_pass, country)

                return LoginService.login_user(username,password)

                # country = {
                #     "last_update": datetime.datetime.utcnow(),
                #     "list": [
                #         {"code": "US", "description": "United States"},
                #         {"code": "CA", "description": "Canada"},
                #     ]
                # }
                #
                # response_data = {
                #     "user": data["user"],
                #     "country": country,
                # }
                #
                # return ResponseHelper.success(data=response_data)

        except ValidationError as err:

            logger.error(f"Validation Error: {getattr(err, 'messages', str(err))}")
            db.session.rollback()
            return ResponseHelper.unprocessable_entity(result_description="Validation exception")

        except  ValueError as err:
            logger.error(f"{getattr(err, 'messages', str(err))}")
            db.session.rollback()
            return ResponseHelper.error(result_description=str(err))

        except Exception as e:
            logger.error(f"An error occurred: {str(e)}", exc_info=True)
            db.session.rollback()
            return ResponseHelper.internal_server_error()


    @staticmethod
    def process_verify(data):
        #"verify_link": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyIjoiMThmYzg0YTQtYjQzMC00ZWFkLWE4ZjEtMTk2MTJmNzA5ZDE0IiwiZXhwIjoxNzUyMjc2NjQzfQ.UEsSpCkMq8xNTLiqzyCB572tK-9WkeYaSBF4gfvX7vk"
        try:
            with db.session.begin():

                validated_data = RegisterService.validate_data(data, RegisterVerifySchema())
                # Simulate processing
                verify_link = validated_data.get('verify_link')
                data ={}
                if not verify_link:
                    return jsonify({'message': 'Error - missing verify link'}), 403
                try:
                    data = jwt.decode(verify_link, RegisterService.JWT_SECRET_KEY, algorithms=["HS256"])
                except:
                    return jsonify({'status': 'INVALID', 'message': 'Link is invalid'}), 403

                country = {
                    "last_update": datetime.datetime.utcnow(),
                    "list": [
                        {"code": "US", "description": "United States"},
                        {"code": "CA", "description": "Canada"},
                    ]
                }

                response_data = {
                    "user": data["user"],
                    "country": country,
                }

                return ResponseHelper.success(data=response_data)

        except ValidationError as err:

            logger.error(f"Validation Error: {getattr(err, 'messages', str(err))}")
            db.session.rollback()
            return ResponseHelper.unprocessable_entity(result_description="Validation exception")

        except  ValueError as err:
            logger.error(f"{getattr(err, 'messages', str(err))}")
            db.session.rollback()
            return ResponseHelper.error(result_description=str(err))

        except Exception as e:
            logger.error(f"An error occurred: {str(e)}", exc_info=True)
            db.session.rollback()
            return ResponseHelper.internal_server_error()


    @staticmethod
    def process_request(data):
        try:
            with db.session.begin():

                validated_data = RegisterService.validate_data(data, RegisterSchema())
                # Simulate processing
                firstname = validated_data.get('firstname')
                lastname = validated_data.get('lastname')
                email = validated_data.get('email')

                regData = MembersPending.add_members_pending( firstname, lastname, email)
                send_register_mail(regData.email, regData.uid, regData.id, firstname, lastname)

                response_data = {
                    "pending_id": regData.id,
                    "pending_uid": regData.uid,
                }

                return ResponseHelper.success(data=response_data)

        except ValidationError as err:

            logger.error(f"Validation Error: {getattr(err, 'messages', str(err))}")
            db.session.rollback()
            return ResponseHelper.unprocessable_entity(result_description="Validation exception")

        except  ValueError as err:
            logger.error(f"{getattr(err, 'messages', str(err))}")
            db.session.rollback()
            return ResponseHelper.error(result_description=str(err))

        except Exception as e:
            logger.error(f"An error occurred: {str(e)}", exc_info=True)
            db.session.rollback()
            return ResponseHelper.internal_server_error()


def send_register_mail(signup_email, pending_uid,pending_id,firstname, lastname):

    pending_member = {
        "email": signup_email,
        "pending_uid": pending_uid,
        "first_name": firstname,
        "last_name": lastname,
        "pending_id":pending_id,
    }
    jwt_part = jwt.encode(
                  {"user": pending_member, 'exp' : datetime.datetime.utcnow() + datetime.timedelta(minutes=3330)},
                  RegisterService.JWT_SECRET_KEY, algorithm='HS256'
              )
    panel_url =  panel_url = RegisterService.THIS_SITE_URL # "https://qa-panel.mermsemr.com"
    link_url= str(panel_url) + '/csignup/' + jwt_part

    msg_body = f"""
                Hello {firstname},
                
                You received this message for account verification

                Follow the link:{link_url}

                For any Support
                Reach Out
                support@mermsemr.com
              """

    sender_email = RegisterService.SEND_EMAIL_FROM
    sender_password =  RegisterService.SEND_EMAIL_PASS
    receiver_email = signup_email
    subject = "Verify your MERMS(AI) Account Setup"
    body = msg_body


    msg = MIMEMultipart()
    msg['Subject'] = subject
    msg['From'] = sender_email
    msg['To'] = receiver_email
    msg.attach(MIMEText(body, 'plain'))  # or 'html' for HTML content

    try:
        # For Gmail, use 'smtp.gmail.com' and port 587 (TLS) or 465 (SSL)
        # For other providers, consult their documentation for SMTP server and port
        server = smtplib.SMTP('smtp.gmail.com', 587)
        # server.starttls()  # Enable TLS encryption
        server.login(sender_email, sender_password)
        server.sendmail(sender_email, receiver_email, msg.as_string())
        print("Email sent successfully!")
    except Exception as e:
        print(f"Error sending email: {e}")
        logger.error(f"Error sending email: {e}")
    finally:
        server.quit()  # Close the connection

    #
    # signup_data = {}
    # signup_data["id"] = last_row_id
    # signup_data["uid"] = email_uid
    # #'d8651e10-3279-4858-87da-b52936faa6f0'
    #
    # jwt_part = jwt.encode(
    #               {"user": signup_data, 'exp' : datetime.datetime.utcnow() + datetime.timedelta(minutes=3330)},
    #               RegisterService.JWT_SECRET_KEY, algorithm='HS256'
    #           )
    # panel_url = "www.me.com"
    # link_url= str(panel_url) + '/csignup/' + jwt_part
    # print(link_url)
    # #firstname ='Name001'
    # msg = Message(
    #             'verify your MERMS Account',
    #             sender ='message@chiefsoft.com',
    #             recipients = [signup_email,'ameye+merscopy@chiefsoft.com']
    #            )
    # msg.body = f"""
    #             Hello {firstname},
    #             You received this message for account verification
    #
    #             Follow the link:{link_url}
    #
    #             For any Support
    #             Reach Out
    #           """
    #
    # mail.send(msg)

# mail = Mail(app)  # instantiate the mail class
#
# # configuration of mail
# app.config['MAIL_SERVER'] = 'smtp.gmail.com'
# app.config['MAIL_PORT'] = 465
# # app.config['MAIL_PORT'] = 587
# app.config['MAIL_USERNAME'] = 'message@chiefsoft.com'
# app.config['MAIL_PASSWORD'] = 'may12002!'
# app.config['MAIL_USE_TLS'] = False
# app.config['MAIL_USE_SSL'] = True
# mail = Mail(app)



# {
#     "email": "ameye@chiefsoft.com",
#     "firstname": "Olusesan",
#     "lastname": "Ameye",
#     "isChecked": true
# }